package thread;

public class demo17 {

    private static int count = 0;
    private static final Object locker = new Object();

    public static void main(String[] args) throws InterruptedException{
        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                synchronized (locker) {
                    count++;
                }
            }
        });
        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                synchronized(locker){
                count++;
                }
            }
        });

        long beg = System.currentTimeMillis();
        t1.start();
        t2.start();
        

        t1.join();
        t2.join();
        long end = System.currentTimeMillis();
        
        System.out.println(count);
        System.out.println(end - beg + "ms");
    }
}
